Ambient light sensor
In this article, we will explore Ambient light sensor from various angles and perspectives with the aim of thoroughly understanding its importance, impact and relevance in the current context. We will highlight the different facets and dimensions of Ambient light sensor, examining its influence in various fields and its interaction with other elements that shape our reality. Through a detailed and exhaustive analysis, we will reveal the complexity and depth of Ambient light sensor, offering a comprehensive vision that allows us to fully appreciate its meaning. Using a holistic approach, we will approach Ambient light sensor from a multifaceted perspective, inviting the reader to immerse themselves in a journey of discovery and understanding that broadens their horizons and enriches their knowledge on this topic.
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An ambient light sensor is a component in smartphones, notebooks, other mobile devices, automotive displays and LCD TVs. It is a photodetector that is used to sense the amount of ambient light present, and appropriately dim the device's screen to match it. This avoids having the screen be too bright when the user's pupils are adapted for vision in a dark room, or too dim when the device is used outdoors in the daytime. Dimming the screen on a mobile device also prolongs the lifetime of the battery.
The standard international unit for the illuminance of ambient light is the lux. The typical performance of an ambient light sensor is from less than 50 lux in dim light to over 10,000 lux at noon.
There are three common types of ambient light sensor: phototransistors, photodiodes, and photonic integrated circuits, which integrate a photodetector and an amplifier in one device.
By the end of 2004, about 30% of phones sold in Europe had ambient light sensors, while in 2016, 85% had a built-in ambient light sensor.[citation needed]
References
- ^ George Mastorakis (2015). Resource Management of Mobile Cloud Computing Networks and Environments. IGI Global. p. 314. ISBN 9781466682269.
- ^ Naitang, Chen (October 2005). "The photometric sensor saves power for the mobile phone. Properly controls the display light source to reduce power consumption". www.2cm.com.tw. Archived from the original on 2017-12-23. Retrieved 2019-02-12.